Question

HELP ME PLEASE!! Identify the 35th term of an arithmetic sequence where a1 = -7 and a18 = 95

Answer 1

so you know the formula for n'th term of arithmetic sequence ?

Answer 2

no I don't know

Answer 3

\(\Large a_n = a_1 + (n-1)d\)

where
an is the n'th term
a1 is the 1st term
d = common difference
n = number of terms

Answer 4

common difference is d=6

Answer 5

now further is all substitution

Answer 6

lets use this formula and find 'd' first
we have a18 = 95
so plug in
n=18
an =95
a1= -7
in the formula
and tell me what u get for 'd'

Answer 7

aryan
let her try

Answer 8

ok fine )

Answer 9

is it 9.5?

Answer 10

@hartnn

Answer 11

9.5 for what ?
d?

Answer 12

yes

Answer 13

thats not correct

are you sure you solved this :
\(\Large 95=-7 +17d\)

Answer 14

nope that's definitely not what I solved lol. but is it 6?

Answer 15

yes,
d=6

Answer 16

now use the same formula to get 35th term
plug in
n=35
a1= -7
d=6
in the formula

Answer 17

is the answer 197?

Answer 18

\(\huge \checkmark \)

Answer 19

thank you !